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BELL SYSTEM TECHNICAL JOURNAL 



while a disperse, curved, bubble veil is shown at E. Above and to the right 

 of D are two small fractures. 



Fig. 4.10 — An edge view of BUBBLE-PHAXTOMS using the concentrated projec- 

 tion light. See also Fig. 4.11 



Fig. 4.11 — The same stone as in Fig. 4.10, viewed at a slightly diftercnt angle. Note 

 the bubble-texture, and the width of the planes. 



Figures 4.13 and 4.14 show blue needles in two parts of a single stone 

 which contains needles throughout (stone 10, Fig. 4.5). Only those needles 



